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This invention discloses a digital isolator circuit with additional delay, including a transmitter circuit that receives a data input signal and generates first and second transmitter output signals, wherein the second transmitter output signal is a delayed version of the first transmitter output signal. Subsequently, an isolation barrier generates the first and second isolation output signals, causing a receiver circuit to generate a data output signal in response to these isolation output signals. By further incorporating a delay circuit in the transmitter circuit to delay the first transmitter output signal and generate the second transmitter output signal, this invention effectively enhances the received signal at the receiver circuit, maintaining the stability of the common-mode signal and the robustness of data transmission. A pulse carrier modulation mechanism is also employed to effectively reduce power consumption, electromagnetic interference, and signal jitter.

The invention discloses a transmitter circuit with ringing suppression, which is suitable for being applied to a controller area network. The transmitter circuit comprises a controller area network bus driving circuit, a first operational transduction amplifier, a second operational transduction amplifier and a controller area network bus driving circuit, wherein the controller area network bus driving circuit is used for receiving a transmission data signal and generating a controller area network high-level signal and a controller area network low-level signal; the first operational transduction amplifier is used for receiving the controller area network high-level signal; and a second operational transduction amplifier for receiving the controller area network low level signal. A common-mode voltage signal in a dominant state and a control signal are adopted, and when the control signal is at a high voltage level, the first operation transduction amplifier and the second operation transduction amplifier can actively adjust high and low level signals of a controller area network to be consistent with the common-mode voltage, so that the ringing problem on a bus is inhibited and eliminated.

The utility model discloses a kind of guiding formula arc intervertebral fusion cage sets, it includes: shaft sleeve, intervertebral fusion cage and guide needle, the shaft sleeve includes: first blocking part and second blocking part, the intervertebral fusion cage is housed in the shaft sleeve, the intervertebral fusion cage is configured to rotate radially from the shaft sleeve, the guide needle is configured to pass through the intervertebral fusion cage to guide the intervertebral fusion cage to target position, when carrying out spinal interbody fusion cage fusion, intervertebral fusion cage can be guided to the vertebral body opening of target, is implanted with the rotation to comply with the arc of vertebral body, to avoid injury surrounding nerve root or soft tissue, and reduce the opening area required for operation, reach the requirement of wound range minimization.

A flyback converter with a demagnetization signal, a switching control circuit and a control method. The flyback converter includes a first transistor for switching a transformer to generate a primary side switching current and an output voltage, and a second transistor for generating a circulating current to achieve zero voltage switching of the first transistor. When the flyback converter determines that a preset number of switching cycles have been operated in a non-discontinuous conduction mode according to the primary side switching current, the flyback converter actively forces at least one switching cycle to operate in a discontinuous conduction mode. The flyback converter generates a demagnetization signal, wherein the demagnetization signal simulates a demagnetization period of the transformer to control the second transistor during the non-discontinuous conduction mode, and wherein the flyback converter corrects the demagnetization signal according to the demagnetization period during the actively forced discontinuous conduction mode.

A power supply system includes: first and second external path selection circuits, respectively used to control the first and second power supplies on the first and second nodes to be electrically connected to the first or second system port; and an internal path selection circuit, used to control the third power supply of the third node or the fourth power supply of the fourth node to be electrically connected to at least one power conversion module; the first and second external path selection circuits, the internal path selection circuit, and the power conversion module are used to perform one of the following: (1) receiving at least one external power supply from at least one of the first or second system ports, and generating a third power supply at the third node and / or generating a fourth power supply at the fourth node; or (2) converting battery power to generate at least one corresponding output power supply at at least one of the first or second system ports.